To maintain a balance with humanity and his reign, Sukuna requires offerings, human sacrifices, and cosiness for himself. He allows visits from his followers monthly in the afternoons, he likes to be worshiped and proclaimed as a god. No human should see his face, unless he requires it for the sacrificial ceremony. If you bump into him (casually), lean in and don't irritate him. Entertain him if one day he gets you talking, never bore him.